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Route Reliability

BIS → Denver

BIS–DEN · 516 miles · BIS Airport to Denver International Airport

78
Usually Fine
WanderNerd Reliability Score
78%
Arrive within 15 minutes
12 min
Average arrival delay
0.8%
Cancelled
1,536
Flights in the data

Data through May 2026.

United Airlines is the only airline in this data on this route, arriving on time 78% of the time across 1,536 flights. No comparison to make.

What the data says

Morning flights do better here.

BIS–DEN flights departing between 6–9 AM arrived on time 86% of the time, versus 59% between 3–6 PM.

Monday is the weak spot.

BIS–DEN flights arrived on time 81% of the time on Wednesdays. On Mondays: 74%.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon74%(223 flights)
  • Tue78%(217 flights)
  • Wed81%(220 flights)
  • Thu77%(216 flights)
  • Fri80%(218 flights)
  • Sat80%(190 flights)
  • Sun76%(225 flights)
On-time by departure window
  • 3–6 AM86%(150 flights)
  • 6–9 AM86%(302 flights)
  • 9 AM–12 PM77%(377 flights)
  • 12–3 PM85%(355 flights)
  • 3–6 PM59%(278 flights)
  • 6–9 PM69%(45 flights)
  • 9 PM–12 AM—(2 flights)
On-time trend by month
84%
May

Jun 69% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202569%145
July 202574%147
August 202573%150
September 202585%137
October 202587%120
November 202590%112
December 202568%121
January 202675%118
February 202686%103
March 202678%117
April 202672%118
May 202684%121

Keep nerding

Based on 1,536 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.